For “basic” multicast I have always found that >70% of the problems I troubleshoot end up being the same things over and over and over again.

1. Missing “trigger” to “pull” the multicast down to the receiver
2. Multicast Distribution Tree (MDT) not built cause router doesn’t know
   1. WHO the root of the MDT is
   2. WHERE the root of the MDT is
   3. WHAT is the PIM RPF Neighbor toward the root of the MDT

Thank you, vBrownBag for asking me to present this.  🙂   It was lots of fun

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